Simplified Position Estimation Using Back-EMF for Two-DoF Linear Resonant Actuator
Simplified Position Estimation Using Back-EMF for Two-DoF Linear Resonant Actuator
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DOI：
10.1109/tmag.2013.2282496
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发表时间：
2014-02
影响因子：
2.1
通讯作者：
T. Yoshimoto;Y. Asai;K. Hirata;T. Ota
中科院分区：
文献类型：
--
作者：
T. Yoshimoto;Y. Asai;K. Hirata;T. Ota
提出了一种简化的位置估计方法，阐明了无位置传感器控制下两自由度谐振式执行器的动态特性。这种两自由度执行器的特点是可以通过矢量控制独立地控制x轴和z轴的运动。本文利用反电动势的过零时间和幅值外推动子的位置。在单轴和双轴传动中，都发现x轴和z轴的振幅可以在不使用位置传感器的情况下独立控制。测量结果与分析结果吻合较好。从这些结果中，验证了该估计方法的有效性。
This paper proposes a simplified position estimation method and clarifies the dynamic characteristics of the two-degree-of-freedom (DoF) resonant actuator under sensorless control. The feature of this two-DoF actuator is that movement in the x- and z-axis can be independently controlled by vector control. In this paper, we extrapolate the mover position from the zero crossing time and amplitude of the back electromotive force. During both single and biaxial drives, it was found that the amplitude of the x- and z-axis could be independently controlled without using position sensors. The measured results agree well with the analyzed results. From these results, the effectiveness of the proposed estimation method was verified.